package com.zixuan.gulicollege.video.service.impl;

import com.aliyun.vod.upload.impl.UploadVideoImpl;
import com.aliyun.vod.upload.req.UploadStreamRequest;
import com.aliyun.vod.upload.resp.UploadStreamResponse;
import com.aliyuncs.DefaultAcsClient;
import com.aliyuncs.exceptions.ClientException;
import com.aliyuncs.vod.model.v20170321.DeleteVideoRequest;
import com.aliyuncs.vod.model.v20170321.GetVideoPlayAuthRequest;
import com.aliyuncs.vod.model.v20170321.GetVideoPlayAuthResponse;
import com.zixuan.gulicollege.common_utils.ResultCode;
import com.zixuan.gulicollege.exception_handler.ConstantExceptionInfo;
import com.zixuan.gulicollege.exception_handler.GuliException;
import com.zixuan.gulicollege.video.service.VideoService;
import com.zixuan.gulicollege.video.utils.ConstantVodUtils;
import com.zixuan.gulicollege.video.utils.InitObject;
import org.apache.poi.util.StringUtil;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.InputStream;
import java.util.List;

/**
 * @ClassName: VideoServiceImpl
 * @Author: zixuan
 * @Date: 2021/5/12 20:31
 * @Description:
 */
@Service
public class VideoServiceImpl implements VideoService {

    @Override
    public void deleteAliyunVideo(String id) {
        try {
            // 初始化对象
            DefaultAcsClient client = InitObject.initVodClient(ConstantVodUtils.ACCESS_KEY_ID, ConstantVodUtils.ACCESS_KEY_SECRET);
            // 创建删除视频的request对象
            DeleteVideoRequest request = new DeleteVideoRequest();
            // 向request设置视频id
            request.setVideoIds(id);
            // 调用初始化对象的方法实现删除
            client.getAcsResponse(request);
        }catch (Exception e){
            e.printStackTrace();
            throw new GuliException(ResultCode.ERROR, ConstantExceptionInfo.FAIL_DELETE_VIDEO);
        }
    }

    @Override
    public void deleteBatch(List<String> videoListId) {
        try {
            // 初始化对象
            DefaultAcsClient client = InitObject.initVodClient(ConstantVodUtils.ACCESS_KEY_ID, ConstantVodUtils.ACCESS_KEY_SECRET);
            // 创建删除视频的request对象
            DeleteVideoRequest request = new DeleteVideoRequest();

            // 取出list的所有id
            String videoId = StringUtil.join(videoListId.toArray(), ",");

            // 向request设置视频id
            request.setVideoIds(videoId);
            // 调用初始化对象的方法实现删除
            client.getAcsResponse(request);
        }catch (Exception e){
            e.printStackTrace();
            throw new GuliException(ResultCode.ERROR, ConstantExceptionInfo.FAIL_DELETE_VIDEO);
        }
    }

    @Override
    public String getPlayAuth(String id) {

        id = id.trim();

        try {
            // 创建初始化对象
            DefaultAcsClient defaultAcsClient
                    = InitObject.initVodClient(ConstantVodUtils.ACCESS_KEY_ID, ConstantVodUtils.ACCESS_KEY_SECRET);
            // 创建获取凭证
            GetVideoPlayAuthRequest request = new GetVideoPlayAuthRequest();
            // 向request对象中设置视频id
            request.setVideoId(id);
            // 调用方法获取凭证
            GetVideoPlayAuthResponse response = defaultAcsClient.getAcsResponse(request);
            return response.getPlayAuth();
        } catch (ClientException e) {
            e.printStackTrace();
            throw new GuliException(ResultCode.ERROR, ConstantExceptionInfo.GET_PLAY_AUTH_FAIL);
        }
    }

    @Override
    public String uploadVideo(MultipartFile file) {

        try {
            //accessKeyId, accessKeySecret
            //fileName：上传文件原始名称
            // 01.03.09.mp4
            String fileName = file.getOriginalFilename();
            //title：上传之后显示名称
            String title = fileName.substring(0, fileName.lastIndexOf("."));
            //inputStream：上传文件输入流
            InputStream inputStream = file.getInputStream();
            UploadStreamRequest request = new UploadStreamRequest(ConstantVodUtils.ACCESS_KEY_ID, ConstantVodUtils.ACCESS_KEY_SECRET, title, fileName, inputStream);

            UploadVideoImpl uploader = new UploadVideoImpl();
            UploadStreamResponse response = uploader.uploadStream(request);

            String videoId = null;
            if (response.isSuccess()) {
                videoId = response.getVideoId();
            } else { //如果设置回调URL无效，不影响视频上传，可以返回VideoId同时会返回错误码。其他情况上传失败时，VideoId为空，此时需要根据返回错误码分析具体错误原因
                videoId = response.getVideoId();
            }
            return videoId;
        }catch(Exception e) {
            e.printStackTrace();
            throw new GuliException(ResultCode.ERROR, ConstantExceptionInfo.FAIL_UPLOAD_VIDEO);
        }
    }
}
